Yamaha YZF-R125 Service Manual: Checking the steering head
1. Wash:
- Bearings
- Bearing races
2. Check:
- Bearings
- Bearing races Damage/pitting →Replace.
3. Replace:
- Bearings
- Bearing races
a. Remove the bearing races from the steering head pipe with a long rod "1" and hammer.
b. Remove the bearing race from the lower bracket with a floor chisel "2" and hammer.
c. Install a new dust seal and new bearing races.
| CAUTION: If the bearing races are not installed properly, the steering head pipe could be damaged. |
NOTE:
- Always replace the bearings and bearing races as a set.
- Whenever the steering head is disassembled, replace the dust seal.
4. Check:
- Upper bracket
- Lower bracket (along with the steering stem) Bends/cracks/damage →Replace.
Removing the lower bracket
1. Stand the vehicle on a level surface.
WARNINGSecurely support the vehicle so that there
is
no danger of it falling over.
2. Remove:
Upper ring nut
Rubber washer
Lower r ...
Installing the steering head
1. Lubricate:
Upper bearing
Lower bearing
Bearing races
2. Install:
Lower ring nut
Rubber washer
Upper ring nut
Lock washer
Refer to "CHECKING AND ADJUSTING
THE STEERING HEAD ...
Other materials:
Removing and installing the cowlings and panel
Removing and installing the cowlings and panel
Cowling A
Cowling B
Cowling C
Cowling D
Panel A
The cowlings and panel shown need to
be removed to perform some of the
maintenance jobs described in this
chapter. Refer to this section each time
a cowling or panel needs to be ...
Checking the primary driven gear
1. Check:
Primary driven gear "1"
Damage/wear Replace the
primary drive
gear and clutch housing as a set.
Excessive noise during operation
Replace
the primary drive gear and clutch housing as
a set.
...
Checking the piston pin
1. Check:
Piston pin
Blue discoloration/grooves
Replace the
piston pin and then check the lubrication system.
2. Measure:
Piston pin outside diameter "a"
Out of specification Replace
the piston pin.
3. Measure:
Piston pin bore diameter "b"
Out of specifica ...